Cheap Flights from St. Louis to Shannon

View €349 flight on Mon, 11 May 2026Opens in a new window

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Cheap flights from St. Louis to Shannon (STL-SNN)

Prices were available within the past 7 days and start at €349 for one-way flights and €450 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

United
Sun, 3 Aug - Tue, 19 Aug
STL
St. Louis
SNN
Shannon
€450 Return, found 3 days ago
€450
Return
found 3 days ago
Select United flight, departing Sun, 3 Aug from St. Louis to Shannon, returning Tue, 19 Aug, priced at €450 found 3 days ago
United
Sat, 2 Aug - Sat, 16 Aug
STL
St. Louis
SNN
Shannon
€506 Return, found 4 days ago
€506
Return
found 4 days ago
Select United flight, departing Sat, 2 Aug from St. Louis to Shannon, returning Sat, 16 Aug, priced at €506 found 4 days ago
Air Canada
Sun, 3 Aug - Tue, 19 Aug
STL
St. Louis
SNN
Shannon
€619 Return, found 3 days ago
€619
Return
found 3 days ago
Select Air Canada flight, departing Sun, 3 Aug from St. Louis to Shannon, returning Tue, 19 Aug, priced at €619 found 3 days ago
American Airlines
Sun, 3 Aug - Tue, 19 Aug
STL
St. Louis
SNN
Shannon
€656 Return, found 3 days ago
€656
Return
found 3 days ago
Select American Airlines flight, departing Sun, 3 Aug from St. Louis to Shannon, returning Tue, 19 Aug, priced at €656 found 3 days ago
Iberia
Sun, 3 Aug - Tue, 19 Aug
STL
St. Louis
SNN
Shannon
€668 Return, found 3 days ago
€668
Return
found 3 days ago
Select Iberia flight, departing Sun, 3 Aug from St. Louis to Shannon, returning Tue, 19 Aug, priced at €668 found 3 days ago
Delta
Sun, 3 Aug - Tue, 19 Aug
STL
St. Louis
SNN
Shannon
€699 Return, found 3 days ago
€699
Return
found 3 days ago
Select Delta flight, departing Sun, 3 Aug from St. Louis to Shannon, returning Tue, 19 Aug, priced at €699 found 3 days ago
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